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A long magnetic needle of length 2L, magnetic moment M and pole strength m units is broken into peices at the middle. The magnetic moment and pole strength of each piece will be

Option: 1

\frac{M}{2}, \frac{m}{2}


Option: 2

M, \frac{m}{2}


Option: 3

\frac{M}{2}, m


Option: 4

M, m


Answers (1)

best_answer

As we have learnt,

 

Pole Strength (m) -

It is represented by +m and -m.

-

 

 Pole strength of each part = m

magnetic moment of each part  = M' = m'L' = mL = \\ \frac{M}{2}

 

Posted by

shivangi.bhatnagar

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